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# SAS Operators

### Arithmetic Operators

 Operator Priority Purpose Example - I Negative Prefix X_Negative= -X; ** I Exponent X_Squared= X**2; * II Multiply X_Times2= X*2; / II Divide X_DivideBy2= X/2; + III Add X_Plus2= X+2; - III Substract X_Minus2= X-2;

Order that an Expression is Solved:
1. Parentheses are completed first starting with the inner most
2. Higher priority operators are completed first (I is the highest)
3. Priority I operators are completed right to left
4. Priority II and III operators are completed left to right

### Comparison Operators

 Operator Purpose Example = or eq Equal To x = 7 or x eq 7 ^= or ne Not Equal To x ^= 7 or x ne 7 > or gt Greater Than x > 7 or x gt 7 < or lt Less Than x < 7 or x lt 7 < or lt Less Than x < 7 or x lt 7 >= or ge Greater Than or Equal To x >= 7 or x ge 7 <= or le Less Than or Equal To x <= 7 or x le 7

### Logical Operators

 Operator Purpose Example AND or & Returns true only if both the left and right boolean expresion are true x = 7 and y eq 7 OR or | Returns true if either or both left and right boolean expressions are true x = 7 or y eq 7

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